Patents by Inventor Sing Yi Chau

Sing Yi Chau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170341359
    Abstract: Systems, feeder devices and methods are disclosed for moving particulate hot melt adhesive from an adhesive supply to an adhesive melter. A hot melt adhesive system includes a melter configured to heat and melt particulate hot melt adhesive into liquid hot melt adhesive, an adhesive supply containing a bulk quantity of particulate hot melt adhesive, and a feeder device configured to intermittently transfer some of the bulk quantity of particulate hot melt adhesive from the adhesive supply to the melter. An adhesive supply includes a body containing a bulk quantity of particulate hot melt adhesive, and a feeder device integrated into the body and including a mechanical agitator configured to encourage movement of the particulate hot melt adhesive through the feeder device.
    Type: Application
    Filed: August 15, 2017
    Publication date: November 30, 2017
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge, Leslie J. Varga
  • Patent number: 9764537
    Abstract: Systems, feeder devices and methods for moving particulate hot melt adhesive from an adhesive supply to an adhesive melter. A feeder device includes a body having an inlet and an outlet, and an interior communicating with the inlet and the outlet. The inlet is configured to receive particulate hot melt adhesive from an outlet of the adhesive supply, and the outlet is configured to provide particulate hot melt adhesive to an inlet of the adhesive melter. The feeder device further includes a mechanical agitator positioned in the interior for urging the particulate hot melt adhesive in a flow direction toward the outlet.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: September 19, 2017
    Assignee: Nordson Corporation
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge, Leslie J. Varga
  • Patent number: 9540189
    Abstract: An adhesive dispensing device includes a heater unit for melting adhesive material, a receiving space for feeding the heater unit, and a cyclonic separator unit for delivering adhesive pellets to the receiving space. The cyclonic separator unit includes a tangential inlet pipe proximate to a top end of a generally cylindrical pipe, which is connected to the receiving space at an open bottom end. The tangential or spiral flow of air and adhesive pellets generated through the cyclonic separator unit reduces the speed of the air and adhesive pellets to avoid splashing of molten adhesive material while maintaining enough speed to avoid adhesive build up on the generally cylindrical pipe.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: January 10, 2017
    Assignee: Nordson Corporation
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge
  • Publication number: 20160101611
    Abstract: Systems, feeder devices and methods for moving particulate hot melt adhesive from an adhesive supply to an adhesive melter. A feeder device includes a body having an inlet and an outlet, and an interior communicating with the inlet and the outlet. The inlet is configured to receive particulate hot melt adhesive from an outlet of the adhesive supply, and the outlet is configured to provide particulate hot melt adhesive to an inlet of the adhesive melter. The feeder device further includes a mechanical agitator positioned in the interior for urging the particulate hot melt adhesive in a flow direction toward the outlet.
    Type: Application
    Filed: December 18, 2015
    Publication date: April 14, 2016
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge, Leslie J. Varga
  • Patent number: 9266681
    Abstract: Systems, feeder devices and methods for moving particulate hot melt adhesive from an adhesive supply to an adhesive melter. A feeder device includes a body having an inlet and an outlet, and an interior communicating with the inlet and the outlet. The inlet is configured to receive particulate hot melt adhesive from an outlet of the adhesive supply, and the outlet is configured to provide particulate hot melt adhesive to an inlet of the adhesive melter. The feeder device further includes a mechanical agitator positioned in the interior for urging the particulate hot melt adhesive in a flow direction toward the outlet.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 23, 2016
    Assignee: NORDSON CORPORATION
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge, Leslie J. Varga
  • Publication number: 20160009504
    Abstract: An adhesive dispensing device includes a heater unit for melting adhesive material, a receiving space for feeding the heater unit, and a cyclonic separator unit for delivering adhesive pellets to the receiving space. The cyclonic separator unit includes a tangential inlet pipe proximate to a top end of a generally cylindrical pipe, which is connected to the receiving space at an open bottom end. The tangential or spiral flow of air and adhesive pellets generated through the cyclonic separator unit reduces the speed of the air and adhesive pellets to avoid splashing of molten adhesive material while maintaining enough speed to avoid adhesive build up on the generally cylindrical pipe.
    Type: Application
    Filed: September 23, 2015
    Publication date: January 14, 2016
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge
  • Patent number: 9169088
    Abstract: An adhesive dispensing device includes a heater unit for melting adhesive material, a receiving space for feeding the heater unit, and a cyclonic separator unit for delivering adhesive pellets to the receiving space. The cyclonic separator unit includes a tangential inlet pipe proximate to a top end of a generally cylindrical pipe, which is connected to the receiving space at an open bottom end. The tangential or spiral flow of air and adhesive pellets generated through the cyclonic separator unit reduces the speed of the air and adhesive pellets to avoid splashing of molten adhesive material while maintaining enough speed to avoid adhesive build up on the generally cylindrical pipe.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 27, 2015
    Assignee: Nordson Corporation
    Inventors: Sing Yi Chau, Justin Clark, William M. Ridge
  • Publication number: 20140102858
    Abstract: Systems, feeder devices and methods for moving particulate hot melt adhesive from an adhesive supply to an adhesive melter. A feeder device includes a body having an inlet and an outlet, and an interior communicating with the inlet and the outlet. The inlet is configured to receive particulate hot melt adhesive from an outlet of the adhesive supply, and the outlet is configured to provide particulate hot melt adhesive to an inlet of the adhesive melter. The feeder device further includes a mechanical agitator positioned in the interior for urging the particulate hot melt adhesive in a flow direction toward the outlet.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 17, 2014
    Applicant: NORDSON CORPORATION
    Inventors: Sing Yi Chau, Justin A. Clark, William M. Ridge, Leslie J. Varga
  • Publication number: 20140079493
    Abstract: An adhesive dispensing device includes a heater unit for melting adhesive material, a receiving space for feeding the heater unit, and a cyclonic separator unit for delivering adhesive pellets to the receiving space. The cyclonic separator unit includes a tangential inlet pipe proximate to a top end of a generally cylindrical pipe, which is connected to the receiving space at an open bottom end. The tangential or spiral flow of air and adhesive pellets generated through the cyclonic separator unit reduces the speed of the air and adhesive pellets to avoid splashing of molten adhesive material while maintaining enough speed to avoid adhesive build up on the generally cylindrical pipe.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 20, 2014
    Applicant: NORDSON CORPORATION
    Inventors: Sing Yi Chau, Justin Clark, William M. Ridge